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Old 08-22-2006, 11:29 PM   #2 (permalink)
Ray O
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Re: VSV or EGR problems, Please help


"BigB" <bnovinger@adelphia.net> wrote in message
news:1156300889.637897.58160@74g2000cwt.googlegroups.com...[color=blue]
>I am getting the usual EGR flow is low.[/color]

EGR flow should be low at idle.

BTW, what model, year, engine, are you talking about?

If I put a vacumm on the egr[color=blue]
> the engine almost stalls out.[/color]

If you apply vacuum to the EGR valve when the engine is idling, it should
almost stall out so your EGR is operating properly.

With the engine cold I am getting 14[color=blue]
> volts to the VSV at all times. Once the engine is warm it still shows
> 14 volts. The only way I get it to drop is when I rev the engine real
> quick, the voltage drops and goes back up again. I had a vacumm gauge
> on the line that comes from the VSV to the EGR and when the engine is
> warm it shows no vacumm. When I rev the engine the vacumm jumps for a
> split second and then goes back to 0.[/color]

This is not the correct test procedure. Disconnect the VSV for the EGR and
measure continuity between the 2 terminals. You should have between 27 and
33 ohms and when you blow in port E, air should come out of port G. Then
apply 12 volts to the 2 terminals and when you blow in port E, air should
come out of port F.
[color=blue]
> I put a jumper on the E1 and TE1 on the data link, the engine would rev
> for a second then almost die out. I was going to take the VSV off to
> test it with a meter but, I can't get the dang thing off. I was going
> to just buy a new one and zip tie it to the firewall, but I can't
> afford to just buy parts since my 2002 ford explorer is going to need a
> new transmission.[/color]
[color=blue]
> Right now I am bypassing the VSV by running a vacumm hose from the
> regulator right to the egr vavle. Will this work for emission testing
> as long as the engine is warm ?[/color]

No. Applying vacuum to the EGR all the time should cause a rough idle.
[color=blue]
> Sorry for the mixed up post, bottom line my questions are:
> Is the VSV normally open or closed. Should it have 14 volts to it when
> the engine is cold ?[/color]

See above.
[color=blue]
> Can I just bypass the VSV and pass emissions ?[/color]

NO!
[color=blue]
> Could it be the Map sensor ? or something else.
>
> Thanks again,
>[/color]

You never described the symptoms you are trying to cure. What is going on
and under what conditions?
--

Ray O
(correct punctuation to reply)


 
 
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